Finding the Fourth Proportional to 2,341.43, 3,511.67 and 860.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,341.43 : 3,511.67 = 860.15 : x
2. Step 2: Convert to fraction form
   2,341.43/3,511.67 = 860.15/x
3. Step 3: Cross multiply
   2,341.43x = 3,511.67 × 860.15
4. Step 4: Simplify right side
   2,341.43x = 3,020,562.95
5. Step 5: Solve for x
   x = 3,020,562.95/2,341.43
6. Step 6: Final answer
   x = 1,290.05